US6505490B2 - Method of forming a sheet metal cup without a mandrel - Google Patents

Method of forming a sheet metal cup without a mandrel Download PDF

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Publication number
US6505490B2
US6505490B2 US09/797,548 US79754801A US6505490B2 US 6505490 B2 US6505490 B2 US 6505490B2 US 79754801 A US79754801 A US 79754801A US 6505490 B2 US6505490 B2 US 6505490B2
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US
United States
Prior art keywords
rim
forming
blank
axis
radius
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US09/797,548
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English (en)
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US20020116972A1 (en
Inventor
Yahya Hodjat
John P. Roes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gates Corp
Original Assignee
Gates Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gates Corp filed Critical Gates Corp
Priority to US09/797,548 priority Critical patent/US6505490B2/en
Assigned to GATES CORPORATION, THE reassignment GATES CORPORATION, THE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HODJAT, YAHYA, ROES, JOHN P.
Priority to MXPA03008673A priority patent/MXPA03008673A/es
Priority to AT02709530T priority patent/ATE337868T1/de
Priority to BR0204229-0A priority patent/BR0204229A/pt
Priority to EP02709530A priority patent/EP1372881B1/de
Priority to KR10-2002-7014266A priority patent/KR100478058B1/ko
Priority to PCT/US2002/004386 priority patent/WO2002070161A2/en
Priority to ES02709530T priority patent/ES2271225T3/es
Priority to JP2002569321A priority patent/JP3795015B2/ja
Priority to AU2002244010A priority patent/AU2002244010A1/en
Priority to DE60214353T priority patent/DE60214353T2/de
Priority to CNB02800440XA priority patent/CN1241697C/zh
Priority to CA002438958A priority patent/CA2438958C/en
Publication of US20020116972A1 publication Critical patent/US20020116972A1/en
Publication of US6505490B2 publication Critical patent/US6505490B2/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/18—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B21D22/16—Spinning over shaping mandrels or formers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • B21D53/261—Making other particular articles wheels or the like pulleys

Definitions

  • the invention relates to a method of forming a sheet metal cup, and more particularly to a method of forming a sheet metal cup without using a mandrel.
  • Metal cups used as pulleys and idlers, may be formed by spinning or metal forming a flat, circular metal blank or a metal blank with a hub.
  • the flat blank is placed in a spinning machine, where it is generally held in place by clamping chucks.
  • a central mandrel or tailstock is pressed against a center of the blank.
  • a mandrel is also put in an axial position to support the blank across its entire width.
  • the blank is spun while forming rollers are moved radially about the blank, while it is supported by the mandrel. As the forming rollers move inward, metal may be collected and accumulated against the central mandrel, forming a hub.
  • the forming process imposes significant side loads on the central mandrel, thereby requiring it and the associated machinery to have a thickness sufficient to resist deformation.
  • What is needed is a method of forming a sheet metal cup without using a mandrel. What is needed is a method of forming a sheet metal cup without using a mandrel for forming a small radius cup.
  • the present invention meets these needs.
  • the primary aspect of the invention is to provide a method of forming a sheet metal cup without using a mandrel.
  • Another aspect of the invention is to provide a method of forming a sheet metal cup without using a mandrel for forming a small radius cup.
  • the invention comprises a method of forming a sheet metal cup without using a mandrel.
  • a cup shaped blank is first produced having a relief on a rim outer circumference.: The blank is clamped in the spinning machine. The relief controls and facilitates the bending process, creating a uniform curve at a predetermined bending point.
  • a forming roller is engaged with rim, and is moved progressively parallel with an axis of rotation. As the forming roller moves, the rim is progressively bent from an orientation normal to an axis of rotation to a position parallel to the axis of rotation. The fully formed rim can then be punched, if necessary, to accommodate a bearing or shaft. This allows a small radius cup, which can then be used as a pulley or idler, to be formed without use of a mandrel.
  • FIG. 1 is a half cross-sectional view of a blank.
  • FIG. 2 is a half cross-sectional view of the blank in the forming machine.
  • FIG. 3 is a half cross-sectional view of the blank being formed on the forming machine.
  • FIG. 4 is a half cross-sectional view of the progression of forming a pulley in the forming machine.
  • FIG. 1 is a half cross-sectional view of a blank.
  • Cup-shaped blank 10 comprises a rim 12 and hub 13 .
  • Blank 10 may be given its initial form by stamping.
  • Hub 13 also describes a central hole having a radius R 3 about a central axis of rotation A—A. The central hole may receive a shaft or a bearing(not shown).
  • Rim 12 further comprises a relief 11 .
  • Relief 11 has a height H above a surface of rim 12 . Height H is in the range of 0.05 mm to 2 mm.
  • Relief 11 projects in a direction opposite that of a direction of movement of a forming roller.
  • Relief 11 is located at a radius R from axis A—A and it encircles hub 13 .
  • Relief 11 is formed in the blank prior to the rolling process to properly control a bend location in rim 12 as described herein. As such, it provides a predictable location for the bend to occur during the rolling process, resulting in an outer surface concentric about an axis of rotation as describing herein.
  • FIG. 2 is a half cross-sectional view of the blank in the forming machine.
  • Blank 10 is clamped between inner tooling 30 and outer tooling 40 .
  • Hub 13 is held between the respective tooling parts, each properly shaped for receiving those portions of the blank.
  • Tang 41 radially holds hub 13 against tooling 30 .
  • Inner tooling 30 may extend through a central hole in the hub to support the hub during the rolling process, or bear upon a shoulder 31 of hub 13 .
  • forming roller 20 is brought into an initial position adjacent to the rim. It is set at a radius R 1 from axis A—A depending upon the desired final radius R 3 of outer surface 21 . R 1 is greater than radius R. The roller is then engaged with an outer surface 21 of blank 10 . Forming roller 20 is moved substantially parallel to central axis A—A in direction M 1 as described in FIGS. 3 and 4.
  • FIG. 3 is a half cross-sectional view of the blank being formed in the forming machine.
  • Forming roller 20 moves progressively in direction M 1 .
  • Rim 12 initially bends at relief 11 .
  • Rim 12 of the blank is progressively formed until rim 12 is parallel to the axis of rotation A—A, at which point it comes into contact with surface 42 of outer tooling 40 .
  • Surface 42 is concentric with rim 12 upon completion of the forming process.
  • Smooth radius bend 14 is formed at the location of relief 11 .
  • relief 11 determines a total radius R 2 of the completely formed cup.
  • Relief 11 may be sized, by varying height H, and located, by varying radius R, according to the needs of a user, to produce a radius R 2 having a desired value.
  • Radius R of the relief and the engagement radius of the forming roller R 1 combine to determine the total radius from axis A—A to an outer surface of the cup 21 .
  • surface 42 acts to receive the formed rim 12 at a final predetermined radius, and does not operate as a mandrel to support rim 12 during the forming process. Consequently, the metal cup is fully formed without a mandrel.
  • Surface 15 of the formed cup also describes a hole having a predetermined diameter, or it can be punched out to a desired diameter.
  • FIG. 4 is a half cross-sectional view of the progression of forming the cup in the forming machine.
  • Rim 12 is initially in position A, as shown in FIG. 2 .
  • rim 12 is rolled progressively to position B and then to position C.
  • rim 12 is in a final position D, as also shown and described in FIG. 3 .
  • Final position D is the position wherein rim 12 is parallel to an axis of rotation A—A of the cup and is adjacent to hub 13 .
  • the cup produced by the process described herein may be used in any application as a pulley, idler, or any other use that requires a circular rotating element.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Pulleys (AREA)
  • Table Devices Or Equipment (AREA)
  • Forging (AREA)
US09/797,548 2001-02-28 2001-02-28 Method of forming a sheet metal cup without a mandrel Expired - Fee Related US6505490B2 (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
US09/797,548 US6505490B2 (en) 2001-02-28 2001-02-28 Method of forming a sheet metal cup without a mandrel
JP2002569321A JP3795015B2 (ja) 2001-02-28 2002-02-12 マンドレルを用いずにシートメタルカップを成形する方法
DE60214353T DE60214353T2 (de) 2001-02-28 2002-02-12 Verfahren zum formen eines bechers aus metallblech ohne verwendung eines dornes
BR0204229-0A BR0204229A (pt) 2001-02-28 2002-02-12 Método de formar um copo de metal laminado sem um mandril
EP02709530A EP1372881B1 (de) 2001-02-28 2002-02-12 Verfahren zum formen eines bechers aus metallblech ohne verwendung eines dornes
KR10-2002-7014266A KR100478058B1 (ko) 2001-02-28 2002-02-12 맨드릴을 사용하지 않고 판금 컵을 성형하는 방법
PCT/US2002/004386 WO2002070161A2 (en) 2001-02-28 2002-02-12 Method of forming a sheet metal cup without a mandrel
ES02709530T ES2271225T3 (es) 2001-02-28 2002-02-12 Metodo para formar una cubeta a partir de una chapa metalica sin un mandril.
MXPA03008673A MXPA03008673A (es) 2001-02-28 2002-02-12 Metodo de perfilar una copa a partir de una hoja metalica sin usar un mandril.
AU2002244010A AU2002244010A1 (en) 2001-02-28 2002-02-12 Method of forming a sheet metal cup without a mandrel
AT02709530T ATE337868T1 (de) 2001-02-28 2002-02-12 Verfahren zum formen eines bechers aus metallblech ohne verwendung eines dornes
CNB02800440XA CN1241697C (zh) 2001-02-28 2002-02-12 不用心轴的薄金属轴圈的成型方法
CA002438958A CA2438958C (en) 2001-02-28 2002-02-12 Method of forming a sheet metal cup without a mandrel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/797,548 US6505490B2 (en) 2001-02-28 2001-02-28 Method of forming a sheet metal cup without a mandrel

Publications (2)

Publication Number Publication Date
US20020116972A1 US20020116972A1 (en) 2002-08-29
US6505490B2 true US6505490B2 (en) 2003-01-14

Family

ID=25171147

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/797,548 Expired - Fee Related US6505490B2 (en) 2001-02-28 2001-02-28 Method of forming a sheet metal cup without a mandrel

Country Status (13)

Country Link
US (1) US6505490B2 (de)
EP (1) EP1372881B1 (de)
JP (1) JP3795015B2 (de)
KR (1) KR100478058B1 (de)
CN (1) CN1241697C (de)
AT (1) ATE337868T1 (de)
AU (1) AU2002244010A1 (de)
BR (1) BR0204229A (de)
CA (1) CA2438958C (de)
DE (1) DE60214353T2 (de)
ES (1) ES2271225T3 (de)
MX (1) MXPA03008673A (de)
WO (1) WO2002070161A2 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040010661A1 (en) * 1996-11-21 2004-01-15 Hitachi, Ltd. Disk array device with selectable method for generating redundant data
US20040093922A1 (en) * 2002-11-20 2004-05-20 David Mayfield Method and apparatus for spinning to a constant length
US20070125147A1 (en) * 2005-12-06 2007-06-07 Yahya Hodjat Method of forming a part
US20080169489A1 (en) * 2006-10-27 2008-07-17 Robert Raymond Petkovsek Multi-walled tube and method of manufacture
US20090301154A1 (en) * 2008-06-06 2009-12-10 Edag, Inc. Method and apparatus for shaping a rim of a three-dimensionally arched sheet metal

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8915627B2 (en) 2012-07-13 2014-12-23 LiFeng Wang Protrusion structure processing method of backplane and backplane
CN102756031A (zh) * 2012-07-13 2012-10-31 深圳市华星光电技术有限公司 一种背板的凸包加工方法及背板
CN103736788B (zh) * 2013-12-25 2016-04-20 惠州安特科技工业有限公司 一种防止弯曲开裂的z型弯曲工艺及其模具
CN105478616A (zh) * 2016-01-20 2016-04-13 浩雄电气有限公司 防爆容器壳体的生产方法

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE285561C (de) *
US3910423A (en) 1974-10-10 1975-10-07 Aspro Inc Spinner loader equipment
US3991598A (en) 1975-06-06 1976-11-16 Aspro, Incorporated Method of roller spinning cup-shaped metal blanks
US4023250A (en) 1975-08-04 1977-05-17 Aspro, Incorporated Method and apparatus for making hubless V-grooved pulley and product
DE2927506A1 (de) * 1979-07-07 1981-01-29 Heinz F Brockhoff Drueckmaschine
US4289007A (en) 1979-12-05 1981-09-15 Dyneer Corporation Apparatus for hydraulically forming sheet metal pulleys
US4404829A (en) 1980-01-10 1983-09-20 Vanco Dorakovski Method and apparatus for the manufacture of pulleys
JPS58205623A (ja) * 1982-05-25 1983-11-30 Matsushita Electric Works Ltd スピニング加工方法
JPS6397324A (ja) * 1986-10-14 1988-04-28 Fuji Kiko Co Ltd プ−リ−の成形方法
JPS63140732A (ja) * 1986-12-02 1988-06-13 Nippon Isueede Kk プ−リ−の製造方法
US5355705A (en) * 1990-05-04 1994-10-18 Eckehart Schulze Process for controlling the revolving path motions of the spinning roller of a spinning lathe, and spinning lathe for performing the process
US5428980A (en) 1991-08-26 1995-07-04 Iidaka; Tsuguo Method and apparatus for producing cap for drink bottle
US5640867A (en) * 1994-06-08 1997-06-24 Massee; Johan Method and apparatus for forming a rim on a lamp reflector
US5806358A (en) * 1995-12-08 1998-09-15 Leico Gmbh & Co. Werkzeugmaschinenbau Method and apparatus for the manufacture of a workpiece having a boss
US5947853A (en) 1996-08-15 1999-09-07 The Gates Corporation Spun pulley with thick hub
US5951422A (en) 1996-06-24 1999-09-14 The Gates Corporation Hub and pulley with radially inward annular collar

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2553851B1 (fr) * 1983-10-21 1988-10-14 Aubecq Auxi Sa Procede de fabrication d'une poulie a gorges multiples en v et poulie ainsi realisee
DE19723073C2 (de) * 1997-06-02 1999-05-06 Fischer & Kaufmann Gmbh & Co K Verfahren zur Herstellung eines rotationssymmetrischen Werkstücks

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE285561C (de) *
US3910423A (en) 1974-10-10 1975-10-07 Aspro Inc Spinner loader equipment
US3991598A (en) 1975-06-06 1976-11-16 Aspro, Incorporated Method of roller spinning cup-shaped metal blanks
US4023250A (en) 1975-08-04 1977-05-17 Aspro, Incorporated Method and apparatus for making hubless V-grooved pulley and product
DE2927506A1 (de) * 1979-07-07 1981-01-29 Heinz F Brockhoff Drueckmaschine
US4289007A (en) 1979-12-05 1981-09-15 Dyneer Corporation Apparatus for hydraulically forming sheet metal pulleys
US4404829A (en) 1980-01-10 1983-09-20 Vanco Dorakovski Method and apparatus for the manufacture of pulleys
JPS58205623A (ja) * 1982-05-25 1983-11-30 Matsushita Electric Works Ltd スピニング加工方法
JPS6397324A (ja) * 1986-10-14 1988-04-28 Fuji Kiko Co Ltd プ−リ−の成形方法
JPS63140732A (ja) * 1986-12-02 1988-06-13 Nippon Isueede Kk プ−リ−の製造方法
US5355705A (en) * 1990-05-04 1994-10-18 Eckehart Schulze Process for controlling the revolving path motions of the spinning roller of a spinning lathe, and spinning lathe for performing the process
US5428980A (en) 1991-08-26 1995-07-04 Iidaka; Tsuguo Method and apparatus for producing cap for drink bottle
US5640867A (en) * 1994-06-08 1997-06-24 Massee; Johan Method and apparatus for forming a rim on a lamp reflector
US5806358A (en) * 1995-12-08 1998-09-15 Leico Gmbh & Co. Werkzeugmaschinenbau Method and apparatus for the manufacture of a workpiece having a boss
US5951422A (en) 1996-06-24 1999-09-14 The Gates Corporation Hub and pulley with radially inward annular collar
US5947853A (en) 1996-08-15 1999-09-07 The Gates Corporation Spun pulley with thick hub

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040010661A1 (en) * 1996-11-21 2004-01-15 Hitachi, Ltd. Disk array device with selectable method for generating redundant data
US20040093922A1 (en) * 2002-11-20 2004-05-20 David Mayfield Method and apparatus for spinning to a constant length
US6983632B2 (en) * 2002-11-20 2006-01-10 Hess Engineering, Inc. Method and apparatus for spinning to a constant length
US20070125147A1 (en) * 2005-12-06 2007-06-07 Yahya Hodjat Method of forming a part
WO2007067303A3 (en) * 2005-12-06 2009-09-03 The Gates Corporation Method of forming a part
US20080169489A1 (en) * 2006-10-27 2008-07-17 Robert Raymond Petkovsek Multi-walled tube and method of manufacture
US7788960B2 (en) * 2006-10-27 2010-09-07 Cummins Filtration Ip, Inc. Multi-walled tube and method of manufacture
US20110056583A1 (en) * 2006-10-27 2011-03-10 Robert Raymond Petkovsek Multi-walled tube and method of manufacture
US20090301154A1 (en) * 2008-06-06 2009-12-10 Edag, Inc. Method and apparatus for shaping a rim of a three-dimensionally arched sheet metal
US8181498B2 (en) * 2008-06-06 2012-05-22 Edag, Inc. Method and apparatus for shaping a rim of a three-dimensionally arched sheet metal

Also Published As

Publication number Publication date
US20020116972A1 (en) 2002-08-29
WO2002070161A3 (en) 2003-02-20
DE60214353D1 (de) 2006-10-12
JP3795015B2 (ja) 2006-07-12
ATE337868T1 (de) 2006-09-15
ES2271225T3 (es) 2007-04-16
JP2004525769A (ja) 2004-08-26
CA2438958A1 (en) 2002-09-12
DE60214353T2 (de) 2007-04-19
BR0204229A (pt) 2003-04-15
WO2002070161A2 (en) 2002-09-12
EP1372881A2 (de) 2004-01-02
EP1372881B1 (de) 2006-08-30
CN1457276A (zh) 2003-11-19
AU2002244010A1 (en) 2002-09-19
KR100478058B1 (ko) 2005-03-23
CN1241697C (zh) 2006-02-15
MXPA03008673A (es) 2003-12-12
CA2438958C (en) 2007-07-03
KR20030004370A (ko) 2003-01-14

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Owner name: GATES CORPORATION, THE, COLORADO

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Effective date: 20001213

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Effective date: 20110114